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dc.creatorStojanović, D.
dc.creatorOrlović, A.
dc.creatorGlišić, S. B.
dc.creatorMarković, Smilja
dc.creatorRadmilović, Velimir R.
dc.creatorUskoković, Petar S.
dc.creatorAleksić, Radoslav
dc.date.accessioned2018-06-22T19:04:04Z
dc.date.available2018-06-22T19:04:04Z
dc.date.issued2010
dc.identifier.issn0896-8446
dc.identifier.urihttp://dais.sanu.ac.rs/123456789/3427
dc.description.abstractThe objective of this study is to investigate and compare methods of nanosilica coating with γ-methacryloxypropyltrimethoxy (MEMO) silane using supercritical carbon dioxide and carbon dioxide-ethanol mixture. Characterization of grafted silane coupling agent on the nanosilica surface was performed by the infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). The d50 value and particle size distribution were determined by laser particle size analyzer (PSA). The operating parameters of silanization process at 40 °C, such as the silica/silane weight ratio, the presence of ethanol, and the pressure, were found to be important for the successful coating of silica particles with minimum agglomeration. The results indicate that presence of ethanol in high-pressure carbon dioxide plays an important role in achieving successful deagglomeration of coated nanoparticles. Dynamic mechanical analysis (DMA) and scanning electron microscopy (SEM) revealed that dispersion of the silica particles in the PMMA matrix and interfacial adhesion between silica particles and polymer matrix were enhanced, when silica nanoparticles treated with silane under high pressure of carbon dioxide and ethanol were used for the nanocomposite preparation. © 2010 Elsevier B.V. All rights reserved.
dc.publisherElsevier
dc.relationUnited States Department of Energy, Office of Science, Office of Basic Energy Sciences, Grant DE-AC02-05CH11231
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/142006/RS//
dc.rightsrestrictedAccess
dc.sourceJournal of Supercritical Fluids
dc.subjectnanocomposite
dc.subjectnanoparticles
dc.subjectsilanization
dc.subjectsupercritical coating
dc.subjectsupercritical mixture of carbon dioxide and ethanol
dc.titlePreparation of MEMO silane-coated SiO2 nanoparticles under high pressure of carbon dioxide and ethanol
dc.typearticleen
dc.rights.licenseARR
dcterms.abstractAлексић, Радослав; Марковић, Смиља; Стојановић, Д.; Орловић, A.; Глишић, С. Б.; Радмиловић, Велимир; Ускоковиц, Петар С.;
dc.citation.spage276
dc.citation.epage284
dc.citation.volume52
dc.citation.issue3
dc.identifier.wos000277058200005
dc.identifier.doi10.1016/j.supflu.2010.02.004
dc.identifier.scopus2-s2.0-77949320349
dc.type.versionpublishedVersion


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